Mix the baking soda and cornstarch in a saucepan. Slowly add water into and stir over medium heat for 4 to 5 minutes.

It will thicken up pretty quickly.

Once it’s almost the same thickness as playdough, remove from heat and dump onto a clean surface. Cover with a dishtowel until cool. Once cool, knead the dough until smooth and start forming the dough.

(Big Brother wanted to reenact the story of David and Goliath, so he chose to make five smooth stones. Love that kid!)

Allow your creations to dry overnight before painting them. If you choose to seal your designs you can do so with shellac, acrylic spray or even clear nail polish!

I’ll be sharing our final creation later in the week, but until then I’ll leave you with this beaut…

Thanks for this awesome recipe! I made it today but didn’t have quite enough baking soda and it turned out a bit runny. I just kneaded flour into the dough to get the right consistency and it worked too. We also added a bunch of pumpkin pie spice mix and the whole house smells great and it turned the dough into a beautiful earthy orangish brown. It is packed tightly in plastic and still fells malleable.

Hey! I was wondering if this is good to make impressions in, too? We’re talking about dinosaurs in my preschool class and I would like to make “fossils” to dig up in our sand box this week.
I look forward to hearing from you!

Awesome! Thank you!! We have a few allergic to Gluten so this Baking Soda on is perfect and will probably be used in our classroom for years to come! I love the look of the Coffee Grounds one, maybe I’ll give it a whirl when I have a less…allergic group! Thank you!

Teacher here. Thanks for sharing this idea. I saw it on Pinterest. I wonder if you know whether this would work as a base for a totem pole? I am thinking about whether I could make the clay into logs, let it dry, and have kiddos carve on it, maybe using a nail as a tool. Will the clay hold together but yield to carving do you think?

Can we put food dye in it, so it will have a color? When it would dry, would the color stay the same, or would it be white a flakey? Or, would we have to wait for them to dry to paint them green? We are making advent wreathes and just wondering! Thanks!

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Unless otherwise stated, each of the activities shared on this blog require adult supervision at ALL times. Children under 3 should not participate in any activities that involve small pieces.